[baltcode]

Other than the cohort and period life expectancy, what is imp. to most people should be something else:

* How many more years do you expect to live if you are already X years old in 2012?

This is obviously different than just calculating from the cohort life expectancy of 2012-X since you you've already passed the vulnerable infancy stage. Also, say you are 90 today, so your cohort exp, for 1922 births must be something like, say 80. Your expectation of living more is certainly not -10 years!